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101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: boxword.h
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// Description: Class to represent the bounding boxes of the output.
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// Author: Ray Smith
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// Created: Tue May 25 14:18:14 PDT 2010
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//
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// (C) Copyright 2010, Google Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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///////////////////////////////////////////////////////////////////////
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#ifndef TESSERACT_CSTRUCT_BOXWORD_H_
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#define TESSERACT_CSTRUCT_BOXWORD_H_
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#include "genericvector.h"
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#include "rect.h"
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#include "unichar.h"
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class BLOCK;
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class DENORM;
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struct TWERD;
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class UNICHARSET;
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class WERD;
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class WERD_CHOICE;
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class WERD_RES;
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namespace tesseract {
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// Class to hold an array of bounding boxes for an output word and
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// the bounding box of the whole word.
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class BoxWord {
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public:
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BoxWord();
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explicit BoxWord(const BoxWord& src);
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~BoxWord();
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BoxWord& operator=(const BoxWord& src);
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void CopyFrom(const BoxWord& src);
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// Factory to build a BoxWord from a TWERD using the DENORMs on each blob to
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// switch back to original image coordinates.
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static BoxWord* CopyFromNormalized(TWERD* tessword);
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// Clean up the bounding boxes from the polygonal approximation by
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// expanding slightly, then clipping to the blobs from the original_word
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// that overlap. If not null, the block provides the inverse rotation.
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void ClipToOriginalWord(const BLOCK* block, WERD* original_word);
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// Merges the boxes from start to end, not including end, and deletes
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// the boxes between start and end.
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void MergeBoxes(int start, int end);
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// Inserts a new box before the given index.
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// Recomputes the bounding box.
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void InsertBox(int index, const TBOX& box);
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// Changes the box at the given index to the new box.
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// Recomputes the bounding box.
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void ChangeBox(int index, const TBOX& box);
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// Deletes the box with the given index, and shuffles up the rest.
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// Recomputes the bounding box.
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void DeleteBox(int index);
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// Deletes all the boxes stored in BoxWord.
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void DeleteAllBoxes();
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// This and other putatively are the same, so call the (permanent) callback
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// for each blob index where the bounding boxes match.
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// The callback is deleted on completion.
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void ProcessMatchedBlobs(const TWERD& other, TessCallback1<int>* cb) const;
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const TBOX& bounding_box() const {
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return bbox_;
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}
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int length() const { return length_; }
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const TBOX& BlobBox(int index) const {
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return boxes_[index];
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}
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private:
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void ComputeBoundingBox();
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TBOX bbox_;
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int length_;
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GenericVector<TBOX> boxes_;
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};
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} // namespace tesseract.
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#endif // TESSERACT_CSTRUCT_BOXWORD_H_
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